Sass filter: Support a SASS_LIBS option.
Sass filter: Support a SASS_LIBS option.

aconrad/webassets,glorpen/webassets,florianjacob/webassets,john2x/webassets,aconrad/webassets,0x1997/webassets,heynemann/webassets,wijerasa/webassets,JDeuce/webassets,JDeuce/webassets,glorpen/webassets,scorphus/webassets,0x1997/webassets,scorphus/webassets,glorpen/webassets,heynemann/webassets,heynemann/webassets,john2x/webassets,aconrad/webassets,wijerasa/webassets,florianjacob/webassets